COLUMBUS, Ohio - Junior defender Katie Martorella (Englewood, Colo.) netted her second goal of the season in the 99th minute, giving Ohio State a 2-1 overtime victory over Xavier at the OSU Sports Field Tuesday evening. The Buckeyes remain undefeated on the season at 5-0 while the Musketeers fall to 1-3-1. For the first time this season, the Buckeyes had their backs to the wall as Xavier pressed deep into OSU's half of the field the first 20 minutes of the match. In the 11th minute, Musketeer forward Annette Gruber sent a perfect pass to Erin Coley who chipped the ball over Amber Barnes (So., Fairfield, Ohio), but into the crossbar. Amy Reinshagen leveled the crossbar again in the 15th minute when Amy Lemon's corner kick rested perfectly in front of the goal mouth. The top of the goal could only help the Buckeys so much as Xavier went on the board first in the 21st minute as a result of an OSU mistake. With the Musketeers pressure on high, Amanda Orr (So., Brecksville, Ohio) sent a ball back for Barnes to clear who swiped and got nothing but dirt on her shoe. The ball rolled over her foot and into the net giving Xavier an own goal and a 1-0 lead. The Buckeyes got even 45 seconds later when Becky Borchers (Sr., Dayton, Ohio) finished an Elisa Hamilton (Fr., Cincinnati, Ohio) throw-in to knot the score at one apiece. The second half brought a shift in momentum as the Buckeyes outshot the Musketeers 6-2, but neither team could find the net. Melanie Vierling (Fr., Cincinnati, Ohio) came up short on a couple of clear chances and Gruber also sent a pair of shots wide for the Musketeers. Nine minutes into the first sudden death overtime period, Hamilton executed a perfect flip throw-in deep in Xavier territory that Brynn Catino (Fr., Westerville, Ohio) headed and Martorella settled and buried into the left side of the net. OSU outshot Xavier 13-9 on the day with Borchers leading the way, tallying three strikes at goal. Gruber recorded four shots for the Musketeers. OSU's Emily Thorpe (Fr., Cincinnati, Ohio) left the game in the 42nd minute with a strained right ankle and did not reenter the match. The Buckeyes open Big Ten play, hosting Illinois, Friday at 5 p.m.